WO2023009427A1 - Clapet antiretour à débit élevé destiné à des applications de gaz médical - Google Patents

Clapet antiretour à débit élevé destiné à des applications de gaz médical Download PDF

Info

Publication number
WO2023009427A1
WO2023009427A1 PCT/US2022/038159 US2022038159W WO2023009427A1 WO 2023009427 A1 WO2023009427 A1 WO 2023009427A1 US 2022038159 W US2022038159 W US 2022038159W WO 2023009427 A1 WO2023009427 A1 WO 2023009427A1
Authority
WO
WIPO (PCT)
Prior art keywords
check valve
plunger
outlet
gas
finned
Prior art date
Application number
PCT/US2022/038159
Other languages
English (en)
Inventor
Mark W. Allen
Paul Barnett
Original Assignee
Beaconmedaes Llc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beaconmedaes Llc filed Critical Beaconmedaes Llc
Priority to CN202280065638.6A priority Critical patent/CN118043581A/zh
Priority to CA3227423A priority patent/CA3227423A1/fr
Priority to EP22758060.2A priority patent/EP4377592A1/fr
Publication of WO2023009427A1 publication Critical patent/WO2023009427A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
    • F16K15/026—Check valves with guided rigid valve members the valve being loaded by a spring the valve member being a movable body around which the medium flows when the valve is open
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/02—Check valves with guided rigid valve members
    • F16K15/06—Check valves with guided rigid valve members with guided stems
    • F16K15/063—Check valves with guided rigid valve members with guided stems the valve being loaded by a spring
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/24—Check- or non-return valves
    • A61M2039/2473—Valve comprising a non-deformable, movable element, e.g. ball-valve, valve with movable stopper or reciprocating element
    • A61M2039/2486—Guided stem, e.g. reciprocating stopper

Definitions

  • the present invention relates to the distribution of gases using gas networks within a building.
  • the invention relates to medical gas networks in medical gas facilities such as hospitals and similar facilities.
  • the relevant hardware is often a check valve; i.e., open under desired gas flow and closed (to prevent loss and leakage) when the gas flow stops.
  • NFPA99 health care facilities code requires a minimum flow rate for a given pressure drop expressed as 3.5 standard cubic feet per minute (SCFM) (100 SLPM) with a pressure drop of not more than 5 psi (34 kPa) which ensures the patient has adequate gas flow.
  • SCFM standard cubic feet per minute
  • newer patient rooms or similar spaces provide medical gases as well as power and lighting on modular, ceiling -mounted systems that include rotational joints, connecting arms, and depending columns. These allow a desired gas outlet (or light or power) to be quickly and easily moved into a new position more convenient for the patient’s care or the medical practitioners work. See, e.g., US Patent No. 7770860.
  • the present invention helps solves the pressure and flow rate problem by making the internal components of the check valve more aerodynamic to improve the flow performance for the same drop in pressure as compared to current check valve designs.
  • the invention is a check valve for high flow medical gas applications.
  • the check valve includes a valve body that defines a flow channel through the valve body from an inlet to an outlet, and a movable plunger in the flow channel of the valve body. The plunger is constrained in the flow channel between the inlet and the outlet.
  • the plunger comprises a finned frustoconical inlet end having one or more fins (which maybe referred to herein as “inlet fins”) and a finned frustoconical tip at its outlet end having one or more fins (which may be referred to herein as “outlet fins”) in order to reduce inlet and outlet turbulence at higher medical gas pressures by reducing the gas flow turbulence within the flow channel.
  • the invention is a method of improving gas flow and avoiding pressure drop in a (medical) gas check valve.
  • the method includes the step of directing an upstream gas flow against a check valve plunger comprising a finned frustoconical inlet end a finned frustoconical tip at its outlet end.
  • the invention is a medical gas delivery system.
  • the system includes a facility (hospital) gas supply, a medical gas network between the gas supply and a medical room (patient, operating, etc.) in the facility, a check valve at the medical room and at which the medical gas network terminates, and a medical room outlet downstream of the check valve for medical gas controlled by the check valve.
  • the check valve includes a plunger comprising a finned frustoconical inlet end and a finned frustoconical tip.
  • Figure 1 is a perspective (isometric) view of a check valve according to the invention.
  • Figure 2 is a isometric cross-sectional view taken along lines 2-2 of Figure 1.
  • Figure 3 is a side elevational view of the check valve according to the invention.
  • Figure 4 is a cross-sectional view of the valve body of the invention taken along lines 4-4 of Figure 3 and coaxially with the intended flow path.
  • Figure 5 is an isometric view of the external face of the orifice cap of a check valve according to the invention.
  • Figure 6 is an isometric view of the internal face of the orifice cap of a check valve according to the invention.
  • Figure 7 is a cross-sectional view of the orifice cap.
  • Figures 8-10 are isometric views of the plunger in the check valve of the invention.
  • Figure 11 is a cross-sectional view of the plunger.
  • Figure 12 is an exemplary illustration of a hospital room showing the position of gas outlets in a modular system.
  • Figure 13 is a plot of pressure taken against flow rate and showing the performance of the invention against the performance of a conventional check valve.
  • Figure 14 is an exploded cross-sectional view of the check valve and spring, and otherwise corresponding to Figure 14.
  • Figure 1 is a perspective (or isometric) view of the exterior of a check valve 20 for high flow medical gas applications.
  • the check valve 20 includes a valve body 21 that defines a flow channel 22 (e.g., Figure 4) through the valve body 21 from an inlet 23 to an outlet 24.
  • a movable plunger 25 ( Figure 2) is in the flow channel 22 of the valve body 21.
  • the plunger 25 is constrained in the flow channel 22 by an orifice cap 26 at the inlet 23 of the valve body 21 and by an outlet bevel 35 in the flow channel 22 at the outlet 24 of the valve body 21.
  • Figure 1 also illustrates the threaded portions 30 and 31 (male threads are illustrated) typically used to position and connect the check valve in a medical gas network.
  • Figure 1 illustrates that in exemplary embodiments a nut 32 is either positioned on, or formed integrally with, the valve body 21 to allow an otherwise conventional wrench to turn (typically to tighten or remove) the valve body 21.
  • Figure 2 is a perspective cross-sectional view of the valve 20 taken generally along lines 2-2 of Figure 1.
  • Figure 2 helps illustrate that the plunger 25 has a finned frustoconical inlet end 34 and a finned frustoconical tip 28 at its outlet end.
  • the fins (i.e. flow-directing elements) on the finned frustoconical inlet end and the fins on the finned frustoconical tip reduce inlet and outlet turbulence at higher medical gas pressures by reducing the gas flow turbulence within the flow channel 22.
  • the plunger 25 includes a beveled shoulder 33 between the finned frustoconical inlet end and the finned frustoconical tip and an O-ring 36 on and coaxial with the long axis (flow direction) of the plunger 25.
  • the O-ring 36 sits against an outlet bevel 35 in the valve body when the check valve 20 is closed.
  • the check valve 20 further incorporates a spring 37 to close the check valve 20 by urging the beveled shoulder 33 of the plunger 25 against the outlet bevel 34 in circumstances under which a gas flow either does not or might not close the check valve 20.
  • the spring 37 is held in place by a retainer 27.
  • the check valve 20 maybe opened by pushing the plunger 25 towards the spring 37, a task which is typically accomplished by joining the check valve 20 to an intended gas source fixture (not shown).
  • the orifice cap 26 at the inlet 23 of the valve body 21 helps control gas flow through the check valve 20. As Figure 2 illustrates, the orifice cap 26 constrains the plunger 25 at the inlet 23 of the valve body 21.
  • the outlets maybe tubular in geometry and constructed from an elastomeric material that has sufficient plastic memory and strength to either remain closed or reclose itself unless forced open by a sufficient flow of gas.
  • the flow of gas in the proper direction will force the lips of the finned frustoconical tip 28 apart so that gas can flow.
  • the elastomer collapses to its closed memory position to provide the check function of cutting the gas flow.
  • Figure 3 is a side elevational view of the check valve 20 with commonly numbered items from Figures 1 and 2.
  • Figure 4 is a cross-sectional view taken along line 4-4 of Figure 3 and in particular shows the outlet bevel 35 as well as the direction of gas flow (arrow “F”) through the valve body 21.
  • the outlet bevel 35 forms an angle of about 6o° with respect to the direction of gas flow.
  • Figures 5, 6, and 7 illustrate aspects of an exemplary orifice cap 26.
  • the orifice cap 26 includes a plurality of gas flow passages 40, of which five are present in the illustrated embodiment; however, the plurality of gas flow passages may comprise two gas flow passages, three gas flow passages, four gas flow passages, five gas flow passages, six gas flow passages seven gas flow passages, eight gas flow passages, or more than eight gas flow passages.
  • the passages may comprise anywhere between 10% and 80% of the orifice cap, by volume.
  • Figure 5 has a perspective orientation from the exterior of the check valve 20, while Figure 6 shows the orifice cap 26 from the interior perspective.
  • a flange 41 orients and positions the orifice cap 26 within the inlet 23 of the valve body 21.
  • Figure 7 is a cross-sectional view of the orifice cap 26, the gas flow passages 40, and the flange 41.
  • FIGS 8 through 11 illustrate details of the plunger 25.
  • the finned frustoconical inlet end 34 having one or more fins 47 and the finned frustoconical tip 28 having one or more fins 46 at its outlet end
  • the finned frustoconical inlet 34 terminates in a small cylinder 42.
  • the frustoconical portion 34 terminates towards the mid portion of the plunger 25 in four planar surfaces 43.
  • the planar surfaces 43 terminate in a perpendicular face 44 that together with the remaining portions of the plunger 25 define a channel 45 for the O ring 36.
  • the finned frustoconical tip may comprise any number of outlet fins 46, so long that it comprises at least one fin 46. Further the finned inlet end 34 may comprise any number of inlet fins 47, so long as it comprises at least one fin 47.
  • a medical gas delivery system typically includes a facility (e.g., hospital) gas supply, and a medical gas network between the gas supply and a medical room in that facility of which patient rooms, emergency rooms, intensive care units, and operating rooms, are exemplary.
  • Figure 12 illustrates such a patient room 50 with a plurality of gas outlets 51.
  • the medical gas outlets 51 include corresponding fittings (e.g., DISS, NIST, etc.) and are downstream of the check valve 20 for providing medical gas controlled by the check valve 20.
  • the patient room 50 includes two patient service modules broadly designated at 52 and 53 mounted to the ceiling 54 using rotational joints 55, 56, 57, connecting arms 60 and 61, and pendants 63 and 64.
  • the nature of the service modules 52 and 53 are such that the joints provide full 360° rotation which allows the gas outlets, electrical outlets, medical racks, and the like to be positioned quickly and conveniently as desired or necessary.
  • the medical gas network will typically include a plurality of different medical gases, a plurality of the check valves and a plurality of medical gas outlets.
  • the check valve of the invention has a much higher flow rate at a given pressure drop than conventional check valves.
  • Figure 13 plots flow rate against pressure drop for a check valve according to the invention and for a conventional check valve.
  • Conventional check valves are well understood and widely available in the medical gas network context, and the inventors submit that the comparison illustrated in Figure 13 would be similar for a number of conventional check valves.
  • the check valve 2 oof the invention allows hoses in the pendants to be removed (e.g., for servicing the hoses or pendants) or replaced without losing gas or requiring a system shut down.
  • Figure 13 describes the performance of a “DISS” (Diameter Index Safety System) version of the check valve of the invention.
  • DISS Diameter Index Safety System
  • DISS refers to a set of engineering standards that prevent users from linking pressurized gas holding tanks to the wrong outlets, hoses, or tubing. The criteria designate specific-sized connectors and color coded outlet faceplates for each different medical gas.
  • DISS Compressed Gas Association
  • CGA Compressed Gas Association
  • a DISS-compliant system uses unique, gas-specific threaded connections to fit equipment to (e.g.) station outlets.
  • DISS is not the sole set of standards for connectors, but offers certain functional advantages.
  • the NIST standards Non-Interchangeable Screw Threaded
  • NIST is, for example, the relevant standard for Britain’s National Health Service.
  • the NIST criteria use a range of male and female components and allocate a set of different diameters and a left- or right-hand screw thread to the joining components for each particular gas.
  • Figure 14 illustrates the arrangement of each of the plunger 25, spring 37, orifice cap 26 within the valve body 21.
  • the invention is a method of improving gas flow and avoiding pressure drop as gases flow through a medical gas check valve.
  • the method comprises directing an upstream gas flow against a check valve plunger that includes a finned frustoconical inlet end and a finned frustoconical tip at its outlet end.
  • the check valve is convenient when disconnecting a downstream fitting from a check valve that incorporates this check valve plunger.
  • the method also includes improving the gas flow by opening the check valve by connecting the check valve to a corresponding fitting.
  • Exemplary (but not necessarily exclusive) fittings and be selected from the group consisting of DISS-compliant and NIST-compliant fittings.
  • the method further comprises the step of fixing the check valve in place in a medical gas network prior to the step of directing the upstream gas flow against the plunger.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Anesthesiology (AREA)
  • Hematology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Pulmonology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Check Valves (AREA)

Abstract

Un clapet antiretour destiné à des applications de gaz médical à débit élevé est divulgué. Le clapet antiretour comprend un corps de clapet qui délimite un canal d'écoulement à travers le corps de clapet d'une entrée à une sortie. Un piston mobile se trouve dans le canal d'écoulement du corps de clapet, le piston étant contraint dans le canal d'écoulement entre l'entrée et la sortie. Le piston comprend une extrémité d'entrée tronconique à ailettes et une pointe tronconique à ailettes au niveau de sa sortie qui agissent en tant qu'éléments d'orientation d'écoulement qui réduisent les turbulences d'entrée et de sortie à des pressions de gaz médical plus élevées en réduisant les turbulences d'écoulement de gaz à l'intérieur du canal d'écoulement.
PCT/US2022/038159 2021-07-29 2022-07-25 Clapet antiretour à débit élevé destiné à des applications de gaz médical WO2023009427A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN202280065638.6A CN118043581A (zh) 2021-07-29 2022-07-25 用于医疗气体应用的高流量止回阀
CA3227423A CA3227423A1 (fr) 2021-07-29 2022-07-25 Clapet antiretour a debit eleve destine a des applications de gaz medical
EP22758060.2A EP4377592A1 (fr) 2021-07-29 2022-07-25 Clapet antiretour à débit élevé destiné à des applications de gaz médical

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202163226794P 2021-07-29 2021-07-29
US63/226,794 2021-07-29

Publications (1)

Publication Number Publication Date
WO2023009427A1 true WO2023009427A1 (fr) 2023-02-02

Family

ID=83006163

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2022/038159 WO2023009427A1 (fr) 2021-07-29 2022-07-25 Clapet antiretour à débit élevé destiné à des applications de gaz médical

Country Status (5)

Country Link
US (1) US20230034413A1 (fr)
EP (1) EP4377592A1 (fr)
CN (1) CN118043581A (fr)
CA (1) CA3227423A1 (fr)
WO (1) WO2023009427A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417778A (en) * 1967-10-05 1968-12-24 Johannes B. Ratelband Check valve with resilient seat means
US4819689A (en) * 1988-02-01 1989-04-11 Ball Valve Company Head-guided poppet valve member and valve assembly
US20050098216A1 (en) * 2003-11-07 2005-05-12 Bodie Cameron D. Adjustable variable flow fertilizer valve
US20090283157A1 (en) * 2008-05-16 2009-11-19 Gm Global Technology Operations, Inc. Check Valve Assembly
US7770860B1 (en) 2005-11-10 2010-08-10 Modular Services Company Medical service system on articulating arm with electromagnetic brakes

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137711B (en) * 1983-04-06 1986-06-18 Boc Group Plc Fluid tight releasable coupling
DE3417210A1 (de) * 1984-05-10 1985-11-14 Robert Bosch Gmbh, 7000 Stuttgart Druckventil
US4827977A (en) * 1988-10-11 1989-05-09 Husky Corporation Breakaway hose coupling
DE59002856D1 (de) * 1989-11-13 1993-10-28 Bosch Gmbh Robert Druckventil.
US5197511A (en) * 1992-01-30 1993-03-30 Allied Healthcare Products, Inc. Fluid outlet system
US5967181A (en) * 1997-11-24 1999-10-19 Ctb, Inc. Pressure regulator for watering system
JP3517369B2 (ja) * 1998-09-18 2004-04-12 株式会社テージーケー 過冷却度制御式膨張弁
US6050297A (en) * 1998-11-17 2000-04-18 Dresser Industries, Inc. Breakaway hose coupling for fuel dispensers
JP2001004252A (ja) * 1999-06-24 2001-01-12 Tgk Co Ltd 過冷却度制御式膨張弁
JP3984524B2 (ja) * 2002-09-27 2007-10-03 東海ゴム工業株式会社 バルブ内蔵コネクタ
US20140077110A1 (en) * 2012-09-17 2014-03-20 Stephan Gamard Connector assembly for medical gas applications

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3417778A (en) * 1967-10-05 1968-12-24 Johannes B. Ratelband Check valve with resilient seat means
US4819689A (en) * 1988-02-01 1989-04-11 Ball Valve Company Head-guided poppet valve member and valve assembly
US20050098216A1 (en) * 2003-11-07 2005-05-12 Bodie Cameron D. Adjustable variable flow fertilizer valve
US7770860B1 (en) 2005-11-10 2010-08-10 Modular Services Company Medical service system on articulating arm with electromagnetic brakes
US20090283157A1 (en) * 2008-05-16 2009-11-19 Gm Global Technology Operations, Inc. Check Valve Assembly

Also Published As

Publication number Publication date
CN118043581A (zh) 2024-05-14
US20230034413A1 (en) 2023-02-02
EP4377592A1 (fr) 2024-06-05
CA3227423A1 (fr) 2023-02-02

Similar Documents

Publication Publication Date Title
CA1225678A (fr) Dispositif de raccordement pour appareil a gaz
US5275444A (en) Swivel hose coupling for pressurized fluid, fuel and gas systems
CN1076011A (zh) 流体出口系统
US4991820A (en) Fluid conduit coupler
US20230034413A1 (en) High flow check valve for medical gas applications
US6202645B1 (en) Control valve actuated by low-pressure and low-flow rate control fluid
US20160238151A1 (en) Gas cylinder valve
US20110148097A1 (en) Specifically Compatible Connectors for Administration of Stored Gases
CN108057187B (zh) 一种可带气快速连接他救呼吸面罩的连接组件
US6003545A (en) Gas flow control device for high purity, highly corrosive gas service
US7819118B2 (en) Medical gas delivery method and apparatus
US20170108134A1 (en) Medical Gas Manifold
JP2008286228A (ja) ボールバルブ
US6168209B1 (en) Keyed cap for gas outlet valve
US4562856A (en) Connector assembly for a gas
US20140077110A1 (en) Connector assembly for medical gas applications
US7681591B2 (en) In-line swivel for inflatable plugs
US6149128A (en) Keyed cap for gas outlet valve
AU2008202816B2 (en) Block valve for vacuum line or network with emergency input
JP2502110Y2 (ja) 医療ガス配管設備のブロ―用工具
US7278440B2 (en) Safety system hose
JP2009082373A (ja) 二口消火栓
CN220404583U (zh) 一种急诊用氧气分流装置
CN221181277U (zh) 一种气体混合报警装置及呼吸机
US20160208934A1 (en) Gas cylinder valve

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22758060

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 3227423

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 202417014194

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 2022758060

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022758060

Country of ref document: EP

Effective date: 20240229

WWE Wipo information: entry into national phase

Ref document number: 202280065638.6

Country of ref document: CN